Rigid blocks constitute one of the simplest yet most powerful models for understanding seismic response and protection mechanisms across a wide range of structural and non-structural systems. They capture the behaviour of vulnerable elements, such as statues, equipment, or architectural components, while also providing the conceptual foundation for innovative seismic protection strategies. This seminar explores the dual role of rocking systems as both elements to be protected and devices capable of protecting structures. Starting from the classical rigid-block rocking model, the discussion extends to more advanced formulations that incorporate base compliance, three-dimensional effects, and realistic energy dissipation mechanisms. The analysis then examines systems coupled with isolating layers, hysteretic and viscous dampers, tuned mass dampers, and geotechnical seismic isolation, illustrating how rocking can be transformed from a collapse-prone mechanism into a controlled and beneficial energy-dissipation process. Parametric investigations, supported by numerical simulations and experimental validation, demonstrate the effectiveness of these strategies in reducing overturning risk, limiting acceleration transmission, and regularizing structural response across wide ranges of
geometric and dynamic parameters. Probabilistic assessments further quantify the comparative performance of different protection solutions under uncertainty. Particular attention is devoted to engineered rocking applications, such as rocking piers and rocking-based isolation devices, where soil–structure interaction and controlled rocking coexist to enhance stability and self-centering capacity. Overall, the presentation highlights the emerging paradigm of rocking-based seismic protection, in which rigid blocks evolve from vulnerable components into simple, scalable, and sustainable tools for improving seismic resilience at both component and system levels.
27 Febbraio 2026
Venerdì, 27 febbraio 2026, 10:00
Dipartimento di Ingegneria Strutturale e Geotecnica,
Sede di Ingegneria,
Via Eudossiana 18,
Edificio A, Terzo piano, Area Strutture,
Sala Riunioni 329